All of the shark facts rattled off by the main character are true, or close to true.
The monologues which comprise the film were intentionally written after the entire film was shot. Each shoot day consisted of showing up at the beach and Cody Clarke coming up with scenarios for the characters to perform, with all dialogue left up to them, as it would not be heard. After all the shoot days, a rough cut of the film was constructed of all the best shots and takes, and Cody wrote the monologues to that footage.
One of Jules Roscoe's favorite chunks of monologue is the 'pea soup' part, despite not liking pea soup herself.
The first 'shark movie' without a shark in it.
Cody Clarke considers this an 'existential shark film', but does not consider it the first. He cites Jaws: The Revenge, The Life Aquatic, Open Water 2: Adrift, From the Depths, Nightmare Shark, Soul Surfer, Bad CGI Sharks, and Sharks of the Corn as other examples of shark films that he feels qualify as existential.